Effect Of Temperature

Aim: My aim for this experiment is to find out if the temperature of the hydrochloric acid affects the amount of Co2 when it is reacted with CaCo3Plan: I am going to measure the amount of gas that comes off CaCo3 when in hydrochloric acid at different temperatures – 60, 55, 50, 45, I chose these temperatures because I think more gas will come off it the hydrochloric acid is warmer with a gas syringe. I Chose a gas syringe instead of a measuring cylinder because I thought it would be more accurate and it would save having to change over the measuring cylinders. I will carry out the experiment at each different temperature four timesPrediction: I think that the more I heat up the Hydrochloric acid the more gas will come off, because the particles are moving about moreApparatus:* Gas Siringe* Tripod* Retort Stand* Retort Base* Boiling Tube* Bunsen Burner* Heat Proof Mat* Gauze* Measuring cylinder* Thermometer* Caco3* Top Pan Balance* Beaker* WaterMethod:1. Set Up the apparatus as shown in the diagram below2.

Weigh out 5g of CaCo33. put the 5g of CaCo3 into the test tube4. Measure out 10ml of hydrochloric acid5. light the bunsen6. pour the 10ml of hydrochloric acid into the boiling tube7.

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half fill the beaker with water8. put the boiling tube of hydrochloric acid into the beaker9. wait until the Bunsen heats the hydrochloric acid up to what you want10. when heated up remove the Bunsen and turn it off11. pour the hydrochloric acid into the test tube12.

quickly put the bung on the test tube13. take readings from the gas siringe every 10 secs14. repeat this 3 times15. tidy upSafety: I will wear safety goggles, I will stand up incase the cid falls onto my knee, I will make sure the acid does not heat over 60 degreesFair Test: I will use the same amount of Hydrochloric acid each time, I will use the same amount of CaCo3 each time, I will use the same stop clock each timeResults:1)60TimeVolume Of Gas10452060306340795081608355TimeVolume Of Gas10252043305540655070607350TimeVolume Of Gas10342050306440725079608345TimeVolume Of Gas1033204530514059506160652)60TimeVolume Of Gas10372047305240455046604755TimeVolume Of Gas10302041304940515055605650TimeVolume Of Gas10512059306240655066606745TimeVolume Of Gas1040204530494051505260533)60TimeVolume Of Gas10262033304140455046604755TimeVolume Of Gas10302040304840505055605650TimeVolume Of Gas10502058306140645066606745TimeVolume Of Gas103920443049405150536054Average -Temperature455055601037452836Time20445541463049625052405367555650567060576057726159Volume Of GasConclusion: I have found out by looking at my results that the temperature of the hydrochloric acid does not make a significant change in the amount of C02 coming off the CaCo3, my prediction was wrong.Errors and improvements: If I was to do this experiment again I would try to put the bung into the test-tube more quickly as some of my results show that I lost a lot of gas when I was putting the bung in, I didn’t really prove what I had hoped to in my prediction.